Hi, Welcome to Health care magic forum.
You have got utricaria, due to
allergy to some thing, which may be food, cosmetics, dress materials, etc.
It is not clear that whether you are given hydrochlorthiazide, before the reaction, or as a treatment to it.
If it is given before , and then started the reaction, it may be considered that all this may be due to the tablets.
if it is the case, if it is stopped every thing will be stopped automatically.
You try to make a list of the things you use recently just before the reaction, and omit one by one. When you find relief that is the causative, and by avoiding it you can have complete relief.
Wishing for a quick and complete recovery. Thank you.